Worksheets2021 Physical Science Physics Final
Total questions: 44
Worksheet time: 22mins
What is the difference between a scalar and vector quantity
Scalar Quantities shows magnitude only, where Vector Quantities show magnitude and direction.
Vector Quantities shows magnitude only, where Scalar Quantities show magnitude and direction.
Scalar and Vector Quantities are the same thing.
Jerry walked from home to school, then from the school to the park. What is his total distance and displacement?
Distance= 8km, Displacement=2km
Distance= 2km, Displacement=8km
Distance= 5km, Displacement=3km
Distance= 3km, Displacement=5km
What is the average speed (in m/s) of a sprinter who does the 100 m dash in 25 s?
Speed= Distance/Time
4 m/s
40 m/s
2.5 m/s
0.25 m/s
A car has completed 1.5 laps on this 3km track in 10 seconds. The track is 5km wide. What is the average velocity in km/s.
Velocity= Displacement/Time
0.5 km/s
5 km/s
0.45 km/s
4.5 km/s
Which of the following is NOT a way to change acceleration?
Keeping constant speed
Increasing speed
Decreasing speed
Changing direction
Which of the following is incorrectly matched.
Sliding Friction- a plane driving down the runway
Static Friction- a book resting on a desk
Fluid Friction- waves knocking against a boat in the ocean
Rolling Friction- a ball going down a hill
Which of the following is NOT a way to reduce friction?
Increase the force pushing the surfaces together
Using a lubricant
Switching from sliding to rolling friction
Making surfaces smoother
Look at the image, what would be the Net Force and Direction of Motion?
170 N to the Right
170 N to the Left
230 N to the Right
230 N to the Left
Look at the image This object is accelerating at 2 m/s^2 and has a mass of 8kg. How much Force (F) is being applied?
Force=(mass)*(acceleration)
16 kg/m/s^2
4 kg/m/s^2
8 kg/m/s^2
2 kg/m/s^2
Why would you weigh less on the moon?
The moon has less of a gravitational pull.
The moon makes you have less mass.
The moon has more of a gravitational pull
The moon makes you have more mass.
A student throws a ball against a wall. What are the action and reaction forces in this example?
Action: Ball hits Wall to the Right, Reaction: Wall hits Ball to the Left.
Action: Ball hits Wall to the Left, Reaction: Wall hits Ball to the Right
Action: Wall hits Ball to the Right, Reaction: Ball hits Wall to the Left.
Action: Wall hits Ball to the Left, Reaction: Ball hits Wall to the Right
Newton's Third Law of Motion states that for every action, there is an ________ and ________ reaction
Group of answer choices
Equal and Opposite
Unequal and Opposite
Equal and Same
Unequal and Same
A new conveyor system at the local packaging plant will utilize a motor-powered mechanical arm to exert an average force of 8 N to push large crates a distance of 10 meters in 5 seconds. Determine the power output required of such a motor? (Hint: Solve for Work first)
Work=(Force)*(distance) Power=(Work)/(time)
16 Watts
8 Watts
5 Watts
80 Watts
The Law of _______ of Energy states that energy cannot be created or destroyed, it is simply transferred.
Conservation
Creation
Depletion
Transfer
At position 3 on the Roller Coaster. What are the GPE and ME values?
KE=kinetic energy PE= potential energy ME=mechanical energy m=Mass g=Gravity
KE=1/2mv^2 PE=mgh ME=KE+PE
GPE= 0J ME= 20J
GPE= 20J ME= 0J
GPE= 20J ME= 40J
GPE= 0J ME= 40J
A diver steps off a 15 m platform above the water. Assuming there is no air resistance, during the fall there will be a decrease in the diver's ....?
Gravitational Potential Energy
Total Mechanical Energy
Kinetic Energy
Momentum
Which of the following is incorrectly matched
Water Slide- Lever
Gas tank cap- Screw
Blinds- Pulley
Doorknobs- Wheel and Axle
How efficient is a machine that takes 100 J of work and produces 25 J of work?
Efficiency = (Work output)/(Work input) X 100%
25%
50%
75%
100%
If you put 250N of force into a machine and get 500 N of it, what is the actual mechanical advantage?
AMA= (output force/ input force)
5
1
0.5
0.1
Which one is correctly matched?
Conduction- The transfer of heat from one particle of matter to another by direct particle to particle contact.
Radiation- The transfer of thermal energy (heat) through the bulk movement of matter.
Convection- The transfer of (thermal) energy by electromagnetic waves.
Using the picture below, which of the following has a higher Specific Heat?
Water
Gold
Which is correctly matched?
Reflection- The bouncing back of a wave when it hits a surface.
Diffraction- The bending of waves as they pass through different mediums that cause the speed of the wave to change.
Refraction- When 2 or more waves combine
Interference- Change of direction of a wave when it hits an obstacle or edge.
Find the velocity of a wave in a wave pool if its wavelength is 20 m and its frequency is 0.50 Hz.
Wave Velocity= (Frequency)*(Wavelength)
10 m/s
5 m/s
15 m/s
20 m/s
According to the image below, which letter shows the wavelength of this wave?
A
B
C
D
Which is incorrectly matched?
Gamma Rays- Have the longest wavelength and lowest frequency. Used in RADAR and cooking
Infrared Waves- Have a shorter wavelength, from .001 m to 700 nm, and therefore, a higher frequency. Used for finding people in the dark
Visible Light- Wavelengths range from 700 nm (red light) to 30 nm (violet light) with frequencies higher than infrared waves. These are the waves on the EM spectrum that humans can see.
Ultraviolet Light- Wavelengths range from 400 nm to 10 nm; the frequency (and therefore the energy) is high enough with UV rays to penetrate living cells and cause them damage.
Sound waves are what type of wave?
Longitudinal (Compressional)
Transverse
Surface
Electromagnetic
ncreasing the amplitude of a sound increases its _________. Increasing the frequency of a sound increases its _________.
Intensity (Loudness) , Pitch
Pitch, Intensity (Loudness)
This medical imaging uses ___________ sound waves that have a frequency of ___________ or higher.
ultrasonic, 20,000 Hz
ultrasonic, 20 Hz
subsonic, 20,000 Hz
subsonic, 20 Hz
In the image, as the car gets closer the pitch of the sound should get __________. This is called the ________.
Higher, Doppler Effect
Lower, Doppler Effect
Higher, Echolocation
Lower, Echolocation
Directions: Look at the image below and then fill in the blanks of this sentence.
Sentence: " This shoe gained a negative charge by accumulating ___________, This is called ________ electricity."
Electrons, Static
Electrons, Current
Protons, Current
Protons, Static
The Law of Conservation of _________ states that charges cannot be created or destroyed, only transferred.
Charge
Energy
Electricity
Magnetism
Which of the following is correctly paired?
Charging by Friction- Charging objects by rubbing them together
Charging by Induction- Charging objects through touch.
Charging by Conduction- Bringing a charged object close to, but not touching, another object and it becomes charged,
Find the current I through a resistor of resistance R = 2 Ω if the voltage across the resistor is 6 V. (Hint: Open the slide with the triangles from the notes.)
Formula: I = V/R.
3 Amperes
3 Ohms
0.3 Amperes
0.3 Ohms
This diagram represents a closed series circuit. What would happen if the voltage were doubled?
The current would double.
The current would quadruple.
The current would remain constant.
The current would be reduced by half
If bulb Y stops working in the circuit, what will happen to bulbs X and Z?
Bulb X and bulb Z will glow
Bulb X will not glow, but bulb Z will glow.
Bulb X will glow, but bulb Z will not glow.
Bulb X and bulb Z will not glow.
How much electric power is produced from circuit with 10 A of current (I) and a voltage difference (V) of 1.5 V.
Formula: P=IV.
150 Watts
150 Ohms
6.67 Watts
6.67 Ohms
How much electrical energy is used from a 0.1-kW (P) lightbulb that is on for 5 hours (t)?
E=Pt
0.5 kWh
5 kWh
500 kWh
50 kWh
An appliance used 5 kWh of electrical energy. If the rate of energy costs 10 cent per kWh, how much did this lightbulb cost?
Cost= E * rate
50 cent
5 cent
5 dollars
50 dollars
How much voltage is used in a circuit that has 100 watts of power and a current of 10 A. (Hint: use triangles from notes)
Formula: P=VI
10 V
1 V
50 V
5 V
Which of these correctly shows what happens when two magnets are placed side by side?
F
G
H
J
In this picture, the iron filings show the shape of the _______
magnetic field
magnetic core
magnetic axis
magnetic poles
Which is correctly matched?
Transformer- A device that increases or decreases the voltage of an alternating current.
Motor- Converts mechanical energy to electrical energy.
Generator- Converts electrical energy to mechanical energy
Power plants use nuclear reactors and fossil fuels to produce steam to turn a _________ in a generator. This creates ___________ energy, this energy rotates metal wires in a magnetic field to produce ___________ energy.
turbine, mechanical, electric
turbine, electric, mechanical
commutator, electric, mechanical
commutator, mechanical, electric
The current caused by a power plant moves through lines with a _______voltage, because of this a ____________ transformer is used to allow a smaller voltage to enter your home.
High, Step-down
High, Step-up
Low, Step-up
Low, Step-down
